Boost
C++ Libraries
...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
Boost
C++ Libraries
...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
Construct and attach to a parent slot to create a new child slot.
template<
typename CancellationSlot,
typename InFilter,
typename OutFilter>
constexpr cancellation_state(
CancellationSlot slot,
InFilter in_filter,
OutFilter out_filter);
The parent cancellation slot to which the state will be attached.
A function object that is used to transform incoming cancellation signals as they are received from the parent slot. This function object must have the signature:
boost::asio::cancellation_type_t in_filter(
boost::asio::cancellation_type_t);
A function object that is used to transform outcoming cancellation signals as they are relayed to the child slot. This function object must have the signature:
boost::asio::cancellation_type_t out_filter(
boost::asio::cancellation_type_t);
The library provides the following pre-defined cancellation filters: